Originally Posted by fahrenheit
You're looking at this the wrong way. Try and get a PS3 to output 24p when playing back stills from the XMB. It won't.
Its about having standardised testing material and eliminating variables when doing an A/B comparison.
If I had used AVSHD on the PS3 and then static jpgs on the WDTV and posted the results, you would have (rightly) called me up on it.
That depends if you are trying to represent the content that comes from the device or if you are trying to use the device as a reference pattern generator.
If you are trying to find out if the content coming from a device is correct, you definitely need to compare like for like.
If you are just trying to use something as a reference source it doesn't really matter if it's a moving image or a still as a source. The HDMI cable doesn't know, the TV doesn't know it's all just encoded as a frame once it leaves the device.
Many devices do treat pictures different than video, and that's because pictures are typically have full range content and videos use video range. So compressing the jpg to video range would be the correct thing to do, from a consumer standpoint.